We’ve gathered some of the latest industry news for you. This month, with an eye on the past, present, and future, let’s take a look at what is happening in the world of energy efficiency.

Global investment in energy efficiency is up. Way up. In 2015, global energy intensity (an accurate measure of EE) dropped three times more than it did in 2013, writes Katherine Tweed. Despite that inspiring news, the International Energy Agency reports that energy efficiency has to expand at an even rapid annual rate to meet the climate goals established last year by the Paris Climate Agreement. Greentech Media.

Are you sleeping poorly? Are you not thinking clearly? Perhaps it is time to find a greener place to work. Joe Romm explains that new research from Harvard University has linked better sleep and higher cognitive function to work at green-certified buildings. ThinkProgress.

Forty years ago, amidst the uncertainty of the energy crises of the 1970s, a young scientist published a new prescription for American energy policy that focused on energy efficiency and renewable sources. Looking back on his transformative Foreign Affairs article, Amory Lovins analyzes what he got right (a lot), what he got wrong (less), and what he would like to see change. Rocky Mountain Institute.

We conclude this month with an older article, but an important one nonetheless. Last year, as part of a special edition on energy and technology, The Economist explained the benefits of energy efficiency, calling it “the invisible fuel.” Energy efficiency may be less visible, especially in comparison to flashier clean energy sources like solar, but Lime Energy is working to remove this reputation, making efficiency more visible to small business customers across the United States. The Economist.